pent up

/ˈpɛnt ʌp/
adjective
  1. (of emotions or energy) held in and not expressed or released for a period of time.
    • After weeks of isolation, she had a lot of pent-up anger.
    • The kids needed to run around to release their pent-up energy.
    • He finally expressed his pent-up feelings in a long letter.
Antonyms
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